A high-power microwave continuous cracking system for hard ores

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-04-27 DOI:10.1016/j.asej.2025.103440

Feng Lin , Ziyang Wang , Yuntan Ao , Shiping Li , Xiangxin Su , Yuxi Liu

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Abstract

A pilot continuous high power microwave treatment system with a double-tube structure (to give adjustable ore thickness) and automatic reflection adjustment was designed. Sishanling granular iron ore was used as a research object. The action parameters of the system were designed and optimized and their rationality verified experimentally. The results of numerical simulation show that the position of the short-circuit plate has little effect on the uniformity of the temperature distribution, and the double-tube structure (pipe diameters 16 and 6 cm) and double-sided radiation can improve the heating uniformity of the ore. Compared to other particle sizes, when the size of the ore particles is 0–14 mm, the power critical point for large-scale arc phenomenon is higher (80 kW). The microwaves in a double-tube structure (pipe diameters 16 and 6 cm) significantly improved the efficiency of the ball milling and dissociation processes compared with a single-tube structure (pipe diameter 20 cm). Finally, a design scheme is proposed for ores with different microwave sensitivities (pipe diameters and ore particle sizes).

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一种用于硬矿石的大功率微波连续裂化系统

设计了一种双管结构（矿厚可调）反射自动调节的中试连续高功率微波处理系统。以四山岭粒状铁矿为研究对象。对系统的动作参数进行了设计和优化，并通过实验验证了其合理性。数值模拟结果表明，短路板的位置对温度分布均匀性影响不大，双管结构（管径为16和6 cm）和双面辐射可以改善矿石的加热均匀性。与其他粒度相比，当矿石粒度为0-14 mm时，大范围电弧现象的功率临界点更高（80 kW）。与单管结构（管径20 cm）相比，双管结构（管径16 cm和6 cm）中的微波显著提高了球磨和解离过程的效率。最后，针对不同微波灵敏度（管径和粒度）的矿石，提出了相应的设计方案。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.